Keyless blade clamp is for fast, easy blade installation and removal. It has a 5.5 Amp motor to deliver powerful cuts in the hardest materials. Variable speeds delivers 0 - 3,100 strokes per minute for optimal cutting speed. 4-position orbital action allows for faster, more aggressive cuts in a variety of materials. It has an all-metal gear case which provides superior durability on a professional site. The shoe bevels from 0 to 45 degrees for beveled cuts.